Pleurothallis calceolaris Rchb.f. 1876 SUBGENUS Pleurothallis SECTION Macrophyllae-Fasciculatae Lindl 1859 TYPE for the SECTION

Photo by Ecuagenera and their Ecuador Orchid Website

Yellow Form

Photo by Cheryl M LeBlanc and the Wheeler Orchid Collection at BSU>

Drawing

Drawing by Carl Luer

Full shadeCold spring

Common Name or Meaning The Small Shoe Pleurothallis [refers to the deeply concave synsepal]

Flower Size .4" [1 cm]

Found in Antioquia department of Colombia at elevations around 2180 meters as a small sized, cold growing, caespitose terrestrial with erect to suberect, stout ramicauls enveloped basally by 2 tubular sheaths and another below the middle and carrying a single, apical, rigidly coriaceous, dark blue-green above, purple suffused below, ovate, acute, deeply cordate, sessile base leaf that blooms in the spring on a slender, arising through and enveloped completely by a reclining spathe, .6" to .75" [1.5 to 1.8 cm] long, fascile of 2 to 4 simultaneous single flowered inflorescence with a thin, tubular, shorter than the pedicel floral bract.

"Distinguished by the large, blue green leaves borne by longer, stout ramicauls. A few fleshy-rigid flowers are produced from a reclinig spathe at the base of the leaf. The dorsal sepal is verrucose and convex with recurved sides. The synsepal is deeply concave and transversely ovate. The petals are verruculose and with obtuse marginal angles above the basal quarter. The lip is thick and transversely ovate." Luer 2005

Synonyms Acronia calceolaris (Rchb.f.) Luer 2005; Pleurothallis fornix Luer & R.Escobar 1984; Zosterophyllanthos fornix (Luer & R.Escobar) Szlach. & Marg. 2001

References W3 Tropicos, Kew Monocot list , IPNI ;

Orquideologia Vol 16 No 2 1984 as P fornix drawing fide;

Icones Pleurothallidinarum Systematics of Pleurothallis Vol 3 Luer 1986 as P fornix;

Icones Pleurothallidinarum Systematics of Pleurothallis Vol 3 Luer 1986 as P fornix drawing fide;

Native Colombian Orchids Vol 6 COS 1998 as P fornix photo fide;

Icones Pleurothallidinarum Vol XXVII Dryadella Systematics of Macrophyllae-Fasciculatae Luer 2005 as Acronia calceolaris;

Icones Pleurothallidinarum Vol XXVII Dryadella Systematics of Macrophyllae-Fasciculatae Luer 2005 as Acronia calceolaris drawing fide

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